Here you will find the most important questions and answers about our own brand ERZMO®MS 1.

The motor “hums” even though the bike is not moving?

After switching on, a “rotating field” is present in the motor, which is supplied with power as soon as you press the throttle grip and allows the bike to move off without delay.

It is very hard to pedal with a high payload and/or on hills.

Shift down one or two gears.

On a straight line or slight incline, you usually ride in a high gear. It is possible to ride the ERZMO without effort.

How does the motor support me?

Depending on the throttle position, the motor provides up to 100% of the torque, regardless of your own supplied power. You can ride purely electrically with the motor up to 25 km/h (with pedal movement).

How do I increase the range of the bicycle?

You select a gear in which you still have resistance against the pedals when pedaling.

You can adjust the torque of the motor via the handle position and thus support the motor.

The total power at “full throttle” is 600 Wp. At a pedaling power of 100 W, the motor reduces its power to 500 W and at a pedaling power of 500 W, the motor only supports with 100 W.

How many gears does the transmission have?

There are 2 versions: A 3-speed and a 1-speed version. In the 1-speed version, this is the smallest and designed as a “bring home” in case of battery or motor failure.

With the 3-speed transmission, you can better support the motor, which increases range and speed.

Loud creaking or grinding noises can be heard from the engine while driving.

Unscrew side cover (left) and check for mechanical deformation and rectify.

External impact (e.g. fall) may cause the cover to be pressed inwards and rub against the gear unit.

It is difficult to shift between gears.

Turn pedals slowly. It is difficult or impossible to shift gears when stationary. The hub gears require a rotating movement of the pedals. If the pedal movement is too fast, the gear cannot be engaged.

I’m on a hill, have 3rd gear engaged and can’t get going with it.

Shift to first gear and pedal backwards. The hub gears are designed so that when pedaling backwards, the gear can be engaged but no power is needed.

While driving, the pedals spin and you cannot transmit power to the downforce.

Shift to 2nd or 3rd gear.

At full speed, the engine turns faster than you can transmit via the pedals in first gear.

When stationary, the pedals spin and no power can be transmitted to the downforce.

Readjust the Bowden cable of the gearshift. Unscrew the set screw on the gearshift by a few mm and shift through all gears.

Does the engine have “recuperation” (energy recovery during braking)?

No, so far it does not.

What is the range?

Ranges of 70 km were driven with a 1400 Wh battery. The energy requirement is around 10 – 30 Wh per km, depending on support, payload and terrain.